Fluid-translating device



H. F. SCHMIDT.

FLUID TRANSLATING DEVICE.

APPLICATION FILED SEPT. 12, 1919.

1,386,958. Patentd Aug. 9,1921.

ENTOR. 7 0a- I 4w ATTORNE}?! UNITED STATES PATENT- OFFICE.

HENRY 86mm, or rrr'rsnunqn, rnnnsxnvmm, assrenor. 'ro'wns'rme- HOUSE ELECTRIC a mmureorunme '00., a conroanrron or PENNSYL- VANIA.

rnum-mnsmrme nnvrcn.

Specification of Letters Patent.

Patented Aug. 9, 1921.

To all whom it may concern:

Be it known that I, HENRY F. SCHMIDT, a citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Fluid-Translating Devices, of which the following is a specifi-' cation.

This invention relates to fluid translating devices and particularly to means for ejecting liquid of condensation from a condenser.

Where ejectors are employed to dlscharge condensate from a condenser some dlfficulty is encountered, due to the factthat the condensate is hot, unless the condensate is delivered to the ejector under considerable head. For the same reason it is difiicult to produce a self-starting ejector which is rellable in operation.

An object of my invention 1s to produce a new and improved ejector which is selfstarting and is capable of efliciently and effectively entraining and discharglng relatively hot condensate from a condenser.

A further object is to produce a new and improved condensate ejector which is simpler and more compact than other condensate ejectors heretofore known.

A further object is to produce a combined condenser and ejector in which means are employed for improving the operation of the ejector and at the same time simplifying and making the combination compact.

These and other objects which will be" made apparent throughout the further description of my invention are attained by means of the apparatus embodying thefeatures herein described and illustrated in the drawing accompanying and forming a part hereof.

The drawing is a diagrammatic sectional view of a condensate ejector embodying my invention, and shown in connection with a diagrammatic sectional view of a condenser.

The condenser 5 is provided at its bottom with a hot well 6, in which condensate collects. Extending through the hot well 6, I have shown an ejector 7 for entraining and ejecting the condensate. As illustrated, the ejector is provided with a nozzle 8, which extends through one wall of the hot well 6 and is adapted to discharge motive fluid at high velocity into and through four combining cones 9, 10, 11 and 12 which, as

shown, are axially alined with the nozzle 8 and are located within the hot well. I have also shown a diffuser 13 axially alined with the nozzle 8 and the combining cones, and extending through the opposite wall of the hot well 6, so that its dlscharge is exposed to atmospheric pressure or at least to a pressure greater than that existing in the condenser. i

As illustrated, the combining cones 9, 10, 11 and 12 are mounted in diaphragms 14, 15, 16 and 17, WlllCh I have shown extending across the hot well 6 at right angles to the axls of the e ector 7 and dividing the hot well into compartments, each of which is open at the top. By means of these diaph'ragms or baffles, condensate is prevented from clrculating locally, that is, it cannot flow from the outlet of a combining cone back to the inlet of the same or any other cone wlthout going up and over one of the diaphra-gms and thereby being mixed with cool condensate and being further cooled by evaporatlon As illustrated, the spacing between combmmg cones 9, 10, 11 and 12 progressivelyuncreases, the cone 9 extends beyond the lnlet edge of the cone 10 whereas a gap separates the last two cones 11 and 12 and the last cone 12 from the difl'user 13. In the apparatus illustrated the. first two cones 9 and 10 are primarily designed to facilitate entraining the condensate and the last two, 11 and 12, for permitting overflow at starting up. However, it will be understood that, in the various stages of operation, any or all of the combining cones may act as entraining or overflow cones.

In operation motive fluid is discharged at hlgh velocity through the nozzle 8 and into and through the combining cones 9, 10, 11 and 12. ondensate is entrained by the jet of motive fluid and is carried by it into and through the cones and the diffuser 13, in a well known manner. At the time of starting the condensate is at rest and an interval of time must elapse before a column of water having sufiicient velocity to discharge itself from the condenser is established. During this interval the space between the combining cones or between the last cone 12 and the diffuser function as overflow outlets. It is more probable that at the instant of starting up the first cone 9 would act as an entraining Hone whereas the others would act as overows.

During normal operation all of the combining cones may act as entraining cones, and for this reason the ejector is capable of operating with hotter condensate than is ossible with an ordinary ejector. It is evident that during normal operation the hot well 6 serves as a common inlet chamber for all of the combining cones of the ejector.

While 1 have described and illustrated but one embodiment of my invention, it will be apparent to those skilled in the art that various changes, modifications, additions and omissions may be made in the apparatus described and illustrated without departing from the spirit and scope of the invention as set forth by the appended claims.

What I claim is:

1. In combination with a condenser and its hot well, an ejector comprising a motive fluid delivery nozzle, a combining cone, the inlet of which is in open communication with the hot well and a diffuser alined with said cone and having its inlet in open communication with the hot well and its discharge subjected to a pressure greater than that existing in the condenser.

2. In combination with'a condenser and its hot well, an ejector comprising a motive fluid delivery nozzle, a combining cone, located within the hot well, and adapted to receive motive fluid delivered by said nozzle, a diffuser having its inlet located within the hot well and in open communication therewith and its outlet subjected to a pressure greater than that within the condenser and a partition located within the hot well and forming a deflecting baflle between the inlet and the discharge of said cone.

3. The combination with a condenserand its hot well, an ejector comprisin a fluid delivery nozzle, a plurality of a ined cones alined with said nozzle, and a diffuser alined with said cones characterized by that the nozzle projects into the hot well, the inlet and outlet of each cone is in open communication with the hot well and the inlet to the difluser is in open communication with the hot well.

4:- lln combination with a condenser and its hot well, an ejector-having its combining chamber located within and in open communication with the hot well, and means located Within the hot well for deflecting overflow from the hot well upwardly toward the surface of the condensate contained in the hot well.

5. In combination with a condenser and its hot well,an ejector comprising a motive fluid delivery nozzle, having its outlet located within the hot well at a point below the normal water level, a combining cone located in the hot well, and having its inlet and outlet in open communication with the interior of the hot well, a difl'user alined with said cone and having its inlet in open resents communication with the hot well and means within the hot well for deflecting overflow streams issuing from said cone so that heated water issuing therefrom is subjected to cooling before reentering the cone.

'6. In combination with a condenser having a condensate outlet, a condensate ejector having its inlet and overflow in direct communication with the condensate outlet and means for causing condensate from the overflow to pass up into the condenser outlet be-. fore being reentrained atthe inlet of the ejector.

7. In an ejector, a nozzle, a plurality of combining cones whose inlet and outlet ends communicate with a single chamber, in which cones fluids are entrained during one stage of operation and from which cones fluids overflow during another stage of operation, and a diffuser into which the combinin cones discharge.

8. lln an ejector, a nozzle, a plurality of combining cones spaced progressively farther apart, and a difluser into which th combining cones discharge.

9. In combination with a condenser, a hot well, an ejector having a plurality of combining cones in direct communication with the hot well, means for delivering motive fluid to the combining cones at high velocity, and a diffuser for receiving the fluids discharged from the combining cones.

10. In combination with a condenser, a hot well, a pluralit of combining cones directly communicatlng therewith, some of said cones being spaced farther apart than others, a difluser into which the combining cones discharge, and a nozzle for delivering fluid to the combining cones at high velocity.

11. In combination with a condenser, a hot well, a plurality of combining cones axially alined and directly communicating with the hot well, a nozzle for delivering motive fluid to the combining cones, a difl'user axially alined with the combining cones, and means for preventing fluid discharged from a combining cone from passing back directly to reenter said cone.

12. An ejector having a nozzle, a plurality of combining cones, a difluser, and a common inlet and overflow chamber, for said combining conesu 13. An ejector having a nozzle, a combining cone havinga plurality of entraining and overflow ports, a diffuser, and a common inlet and overflow chamber for the several entraining and overflow ports of the combining cone.

14. An ejector having an overflow port and an entraining port, a common overflow and inlet chamber for said ports and means whereby the fluids dischar ed from the overflow port are cooled be ore being 'entrained at the entraining port;

- 15. In an ejector, a nozzle, a combining tube having entraining and overflow ports,.

a diffuser into which the combining tube discharges and means for cooling fluids discharged from the overflow ports before said fluids enter the entraining ports.

16. In combination with a condenser, a hot well, an ejector having entraining and overflow ports directly communicating with the hot well in such a manner that said hot well acts as a common inlet and overflow chamber for the ejector and means for pre venting local circulation between the overflow and entraining ports.

In testimony whereof I have hereunto subscribed my name this 11th day of Sep 15 tember, 1919.

HENRY F. SCHMIDT. 

